Starting with the visual T72 texture set, I proceeded to identify surface properties, base materials, and thermal systems. The resulting "material classified" model is used in Infra Red (IR) and Night Vision Goggles (NVG) simulations. The physics is calculated in real time by viXsen, and the model changes according to time of day (thermal load) and selected sensor mode. This model is featured in the viXsen demo scenario.
This is the T72 rendered in Night Vision Goggles (NVG) mode in real-time by the viXsen sensor plugin for Mantis IG.
Here is the T72 in Infra Red (IR) sensor mode, early in the morning (no solar load). Notice the camo pattern has vanished. The textures used here are the same ones used to produce the NVG image; only the sensor mode in viXsen was changed.
This screen capture is with solar load, plus hot engine, tracks and barrel. Notice the solar load on the paint caused the camo pattern to be visible. Again, the same textures are used. The only change is viXsen time of day.